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18 November 2003 Micro sculpting technology using DPSSL
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Proceedings Volume 5063, Fourth International Symposium on Laser Precision Microfabrication; (2003)
Event: Fourth International Symposium on Laser Precision Microfabrication, 2003, Munich, Germany
Multiple pulse laser ablation of polymer is performed with DPSS (Diode Pumped Solid State) 3rd harmonic Nd:YVO4 laser (355 nm) in order to fabricate three-dimensional micro components. Here we considered mechanistic aspects of the interaction between UV laser and polymer to obtain optimum process conditions for maskless photomachining using DPSSL. The photo-physical and photochemical parameters such as laser wavelength and optical characteristics of polymers are investigated by experiments to reduce plume effect, which induce the re-deposited debris on the surface of substrate. In this study, LDST (laser direct sculpting technique) are developed to gain various three-dimensional shape with size less than 500 micrometer. Main process sequences are from rapid prototyping technology such as CAD/CAM modeling of products, machining path generation, layer-by-layer machining, and so on. This method can be applied to manufacture the prototype of micro device and the polymer mould for mass production without expensive mask fabrication.
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Won-Seok Chang, Bosung Shin, Jae-gu Kim, and Kyung-Hyun Whang "Micro sculpting technology using DPSSL", Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003);

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